Why do you think someone from Catalonia would create a map about Mali?

For trading purposes

Explanation:

To conduct trade with Mali, someone from Catalonia would create a map about the region. West Africa was the large producers of gold in the Middle Ages. The Mali Empire was rich in gold and other precious items. From there it began the supply of gold in Europe. Catalans interest in trade and the gold in Africa led someone to create a map about Mali.

answer; regard the action of other people negatively;